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{{Infobox_gene}}
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'''Transcriptional regulator ATRX''' also known as  '''ATP-dependent helicase ATRX''', '''X-linked helicase II''', or '''X-linked nuclear protein''' (XNP) is a [[protein]] that in humans is encoded by the ''ATRX'' [[gene]].<ref name="Stayton_1994"/><ref name="Gibbons_1992"/><ref name="entrez"/>
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== Function ==
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| update_summary = yes
Transcriptional regulator ATRX contains an [[ATPase]] / [[helicase]] domain, and thus it belongs to the [[SWI/SNF]] family of [[chromatin remodeling]] proteins. ATRX is required for deposition of the histone variant [[Histone H3|H3.3]] at [[telomere]]s and other genomic repeats.<ref name="Wong_2010"/> These interactions are important for maintaining silencing at these sites.<ref name="Voon_2015"/><ref name="Elsässer_2015"/><ref name="Udugama_2015"/>
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In addition, ATRX undergoes cell cycle-dependent phosphorylation, which regulates its nuclear matrix and chromatin association, and suggests its involvement in the gene regulation at interphase and chromosomal segregation in mitosis.<ref name="entrez" />
 
== Clinical significance ==
 
=== Inherited mutations ===
 
Inherited mutations of the ATRX  gene are associated with an X-linked mental retardation ([[X-linked alpha thalassemia mental retardation syndrome|XLMR]]) syndrome most often accompanied by [[alpha-thalassemia mental retardation syndrome|alpha-thalassemia]] ([[Alpha-thalassemia mental retardation syndrome|ATR-X]]) syndrome. These mutations have been shown to cause diverse changes in the pattern of [[DNA methylation]], which may provide a link between chromatin remodeling, DNA methylation, and gene expression in developmental processes. Multiple alternatively spliced transcript variants encoding distinct isoforms have been reported. Female carriers may demonstrate skewed [[X chromosome inactivation]].<ref name="entrez" />
 
=== Somatic mutations ===
 
Acquired mutations in ATRX have been reported in a number of human cancers including pancreatic neuroendocrine tumours,<ref name="Heaphy_2011"/> gliomas,<ref name="Schwartzentruber_2012"/> astrocytomas,<ref name="Kannan_2012"/> osteosarcomas,<ref name="Chen_2014"/> and malignant pheochromocytomas.<ref>{{cite journal|last1=Comino-Méndez|first1=I|title=ATRX driver mutation in a composite malignant pheochromocytoma|journal=Cancer Genetics|date=June 2016|volume=209 |issue=6|page=272 |doi=10.1016/j.cancergen.2016.04.058}}</ref> There is a strong correlation between ATRX mutations and an [[Telomere#ALT .28Alternative Lengthening of Telomeres.29 and cancer|Alternative Lengthening of Telomeres (ALT)]] phenotype in cancers.<ref name="Heaphy_2011" />
 
== Interactions ==
 
ATRX forms a complex with [[DAXX]] which is an histone H3.3 chaperone.<ref name="Lewis_2010"/>
 
ATRX has been also shown to [[Protein-protein interaction|interact]] with [[EZH2]].<ref name="Cardoso_1998"/>
 
== See also ==
* [[Alpha-thalassemia mental retardation syndrome]]
 
== References ==
{{reflist|33em|refs =
 
<ref name = "Cardoso_1998">{{cite journal | vauthors = Cardoso C, Timsit S, Villard L, Khrestchatisky M, Fontès M, Colleaux L | title = Specific interaction between the XNP/ATR-X gene product and the SET domain of the human EZH2 protein | journal = Human Molecular Genetics | volume = 7 | issue = 4 | pages = 679–84 | date = April 1998 | pmid = 9499421 | doi = 10.1093/hmg/7.4.679 }}</ref>
 
<ref name = "Chen_2014">{{cite journal | vauthors = Chen X, Bahrami A, Pappo A, Easton J, Dalton J, Hedlund E, Ellison D, Shurtleff S, Wu G, Wei L, Parker M, Rusch M, Nagahawatte P, Wu J, Mao S, Boggs K, Mulder H, Yergeau D, Lu C, Ding L, Edmonson M, Qu C, Wang J, Li Y, Navid F, Daw NC, Mardis ER, Wilson RK, Downing JR, Zhang J, Dyer MA | display-authors = 6 | title = Recurrent somatic structural variations contribute to tumorigenesis in pediatric osteosarcoma | journal = Cell Reports | volume = 7 | issue = 1 | pages = 104–12 | date = April 2014 | pmid = 24703847 | pmc = 4096827 | doi = 10.1016/j.celrep.2014.03.003 }}</ref>
 
<ref name = "Elsässer_2015">{{cite journal | vauthors = Elsässer SJ, Noh KM, Diaz N, Allis CD, Banaszynski LA | title = Histone H3.3 is required for endogenous retroviral element silencing in embryonic stem cells | journal = Nature | volume = 522 | issue = 7555 | pages = 240–4 | date = June 2015 | pmid = 25938714 | pmc = 4509593 | doi = 10.1038/nature14345 }}</ref>
 
<ref name = "entrez">{{cite web | title = Entrez Gene: ATRX alpha thalassemia/mental retardation syndrome X-linked (RAD54 homolog, S. cerevisiae)| url = https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=546| accessdate = }}</ref>
 
<ref name = "Gibbons_1992">{{cite journal | vauthors = Gibbons RJ, Suthers GK, Wilkie AO, Buckle VJ, Higgs DR | title = X-linked alpha-thalassemia/mental retardation (ATR-X) syndrome: localization to Xq12-q21.31 by X inactivation and linkage analysis | journal = American Journal of Human Genetics | volume = 51 | issue = 5 | pages = 1136–49 | date = November 1992 | pmid = 1415255 | pmc = 1682840 | doi =  }}</ref>
 
<ref name = "Heaphy_2011">{{cite journal | vauthors = Heaphy CM, de Wilde RF, Jiao Y, Klein AP, Edil BH, Shi C, Bettegowda C, Rodriguez FJ, Eberhart CG, Hebbar S, Offerhaus GJ, McLendon R, Rasheed BA, He Y, Yan H, Bigner DD, Oba-Shinjo SM, Marie SK, Riggins GJ, Kinzler KW, Vogelstein B, Hruban RH, Maitra A, Papadopoulos N, Meeker AK | display-authors = 6 | title = Altered telomeres in tumors with ATRX and DAXX mutations | journal = Science | volume = 333 | issue = 6041 | pages = 425 | date = July 2011 | pmid = 21719641 | pmc = 3174141 | doi = 10.1126/science.1207313 }}</ref>
 
<ref name = "Kannan_2012">{{cite journal | vauthors = Kannan K, Inagaki A, Silber J, Gorovets D, Zhang J, Kastenhuber ER, Heguy A, Petrini JH, Chan TA, Huse JT | display-authors = 6  | title = Whole-exome sequencing identifies ATRX mutation as a key molecular determinant in lower-grade glioma | journal = Oncotarget | volume = 3 | issue = 10 | pages = 1194–203 | date = October 2012 | pmid = 23104868 | pmc = 3717947 | doi = 10.18632/oncotarget.689 }}</ref>
 
<ref name = "Lewis_2010">{{cite journal | vauthors = Lewis PW, Elsaesser SJ, Noh KM, Stadler SC, Allis CD | title = Daxx is an H3.3-specific histone chaperone and cooperates with ATRX in replication-independent chromatin assembly at telomeres | journal = Proceedings of the National Academy of Sciences of the United States of America | volume = 107 | issue = 32 | pages = 14075–80 | date = August 2010 | pmid = 20651253 | pmc = 2922592 | doi = 10.1073/pnas.1008850107 }}</ref>
 
<ref name = "Schwartzentruber_2012">{{cite journal | vauthors = Schwartzentruber J, Korshunov A, Liu XY, Jones DT, Pfaff E, Jacob K, Sturm D, Fontebasso AM, Quang DA, Tönjes M, Hovestadt V, Albrecht S, Kool M, Nantel A, Konermann C, Lindroth A, Jäger N, Rausch T, Ryzhova M, Korbel JO, Hielscher T, Hauser P, Garami M, Klekner A, Bognar L, Ebinger M, Schuhmann MU, Scheurlen W, Pekrun A, Frühwald MC, Roggendorf W, Kramm C, Dürken M, Atkinson J, Lepage P, Montpetit A, Zakrzewska M, Zakrzewski K, Liberski PP, Dong Z, Siegel P, Kulozik AE, Zapatka M, Guha A, Malkin D, Felsberg J, Reifenberger G, von Deimling A, Ichimura K, Collins VP, Witt H, Milde T, Witt O, Zhang C, Castelo-Branco P, Lichter P, Faury D, Tabori U, Plass C, Majewski J, Pfister SM, Jabado N | display-authors = 6 | title = Driver mutations in histone H3.3 and chromatin remodelling genes in paediatric glioblastoma | journal = Nature | volume = 482 | issue = 7384 | pages = 226–31 | date = January 2012 | pmid = 22286061 | doi = 10.1038/nature10833 }}</ref>
 
<ref name = "Stayton_1994">{{cite journal | vauthors = Stayton CL, Dabovic B, Gulisano M, Gecz J, Broccoli V, Giovanazzi S, Bossolasco M, Monaco L, Rastan S, Boncinelli E | display-authors = 6 | title = Cloning and characterization of a new human Xq13 gene, encoding a putative helicase | journal = Human Molecular Genetics | volume = 3 | issue = 11 | pages = 1957–64 | date = November 1994 | pmid = 7874112 | pmc = | doi = 10.1093/hmg/3.11.1957 }}</ref>
 
<ref name = "Udugama_2015">{{cite journal | vauthors = Udugama M, M Chang FT, Chan FL, Tang MC, Pickett HA, R McGhie JD, Mayne L, Collas P, Mann JR, Wong LH | display-authors = 6 | title = Histone variant H3.3 provides the heterochromatic H3 lysine 9 tri-methylation mark at telomeres | journal = Nucleic Acids Research | volume = 43 | issue = 21 | pages = 10227–37 | date = December 2015 | pmid = 26304540 | pmc = 4666390 | doi = 10.1093/nar/gkv847 }}</ref>
 
<ref name = "Voon_2015">{{cite journal | vauthors = Voon HP, Hughes JR, Rode C, De La Rosa-Velázquez IA, Jenuwein T, Feil R, Higgs DR, Gibbons RJ | display-authors = 6 | title = ATRX Plays a Key Role in Maintaining Silencing at Interstitial Heterochromatic Loci and Imprinted Genes | journal = Cell Reports | volume = 11 | issue = 3 | pages = 405–18 | date = April 2015 | pmid = 25865896 | pmc = 4410944 | doi = 10.1016/j.celrep.2015.03.036 }}</ref>


<!-- The GNF_Protein_box is automatically maintained by Protein Box Bot.  See Template:PBB_Controls to Stop updates. -->
<ref name = "Wong_2010">{{cite journal | vauthors = Wong LH, McGhie JD, Sim M, Anderson MA, Ahn S, Hannan RD, George AJ, Morgan KA, Mann JR, Choo KH | display-authors = 6 | title = ATRX interacts with H3.3 in maintaining telomere structural integrity in pluripotent embryonic stem cells | journal = Genome Research | volume = 20 | issue = 3 | pages = 351–60 | date = March 2010 | pmid = 20110566 | pmc = 2840985 | doi = 10.1101/gr.101477.109 }}</ref>
{{GNF_Protein_box
| image =
| image_source = 
| PDB =
| Name = Alpha thalassemia/mental retardation syndrome X-linked (RAD54 homolog, S. cerevisiae)
| HGNCid = 886
  | Symbol = ATRX
| AltSymbols =; ATR2; MGC2094; MRXS3; RAD54; RAD54L; SHS; XH2; XNP; ZNF-HX
| OMIM = 300032
| ECnumber = 
| Homologene = 416
| MGIid = 103067
| Function = {{GNF_GO|id=GO:0000166 |text = nucleotide binding}} {{GNF_GO|id=GO:0003678 |text = DNA helicase activity}} {{GNF_GO|id=GO:0003682 |text = chromatin binding}} {{GNF_GO|id=GO:0003700 |text = transcription factor activity}} {{GNF_GO|id=GO:0005515 |text = protein binding}} {{GNF_GO|id=GO:0005524 |text = ATP binding}} {{GNF_GO|id=GO:0008270 |text = zinc ion binding}} {{GNF_GO|id=GO:0016787 |text = hydrolase activity}} {{GNF_GO|id=GO:0046872 |text = metal ion binding}} {{GNF_GO|id=GO:0003677 |text = DNA binding}} {{GNF_GO|id=GO:0004386 |text = helicase activity}}
| Component = {{GNF_GO|id=GO:0000228 |text = nuclear chromosome}} {{GNF_GO|id=GO:0005634 |text = nucleus}} {{GNF_GO|id=GO:0005720 |text = nuclear heterochromatin}}
| Process = {{GNF_GO|id=GO:0006281 |text = DNA repair}} {{GNF_GO|id=GO:0006306 |text = DNA methylation}} {{GNF_GO|id=GO:0006310 |text = DNA recombination}} {{GNF_GO|id=GO:0006355 |text = regulation of transcription, DNA-dependent}} {{GNF_GO|id=GO:0007001 |text = chromosome organization and biogenesis (sensu Eukaryota)}} {{GNF_GO|id=GO:0007605 |text = sensory perception of sound}} {{GNF_GO|id=GO:0030900 |text = forebrain development}}
| Orthologs = {{GNF_Ortholog_box
    | Hs_EntrezGene = 546
    | Hs_Ensembl =
    | Hs_RefseqProtein = NP_000480
    | Hs_RefseqmRNA = NM_000489
    | Hs_GenLoc_db =
    | Hs_GenLoc_chr =
    | Hs_GenLoc_start = 
    | Hs_GenLoc_end = 
    | Hs_Uniprot = 
    | Mm_EntrezGene = 22589
    | Mm_Ensembl = ENSMUSG00000031229
    | Mm_RefseqmRNA = NM_009530
    | Mm_RefseqProtein = NP_033556
    | Mm_GenLoc_db = 
    | Mm_GenLoc_chr = X
    | Mm_GenLoc_start = 102002894
    | Mm_GenLoc_end = 102131271
    | Mm_Uniprot = Q3TP53
  }}
}}
'''Alpha thalassemia/mental retardation syndrome X-linked (RAD54 homolog, S. cerevisiae)''', also known as '''ATRX''', is a human [[gene]].<ref name="entrez">{{cite web | title = Entrez Gene: ATRX alpha thalassemia/mental retardation syndrome X-linked (RAD54 homolog, S. cerevisiae)| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=546| accessdate = }}</ref>


<!-- The PBB_Summary template is automatically maintained by Protein Box Bot.  See Template:PBB_Controls to Stop updates. -->
{{PBB_Summary
| section_title =
| summary_text = The protein encoded by this gene contains an ATPase/helicase domain, and thus it belongs to the SWI/SNF family of chromatin remodeling proteins. The mutations of this gene are associated with an X-linked mental retardation (XLMR) syndrome most often accompanied by alpha-thalassemia (ATRX) syndrome. These mutations have been shown to cause diverse changes in the pattern of DNA methylation, which may provide a link between chromatin remodeling, DNA methylation, and gene expression in developmental processes. This protein is found to undergo cell cycle-dependent phosphorylation, which regulates its nuclear matrix and chromatin association, and suggests its involvement in the gene regulation at interphase and chromosomal segregation in mitosis. Multiple alternatively spliced transcript variants encoding distinct isoforms have been reported.<ref name="entrez">{{cite web | title = Entrez Gene: ATRX alpha thalassemia/mental retardation syndrome X-linked (RAD54 homolog, S. cerevisiae)| url = http://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=546| accessdate = }}</ref>
}}
}}


==References==
== Further reading ==
{{reflist|2}}
{{refbegin|33em}}
==Further reading==
* {{cite journal | vauthors = Mulley JC, Kerr B, Stevenson R, Lubs H | title = Nomenclature guidelines for X-linked mental retardation | journal = American Journal of Medical Genetics | volume = 43 | issue = 1-2 | pages = 383–91 | year = 1992 | pmid = 1605216 | doi = 10.1002/ajmg.1320430159 }}
{{refbegin | 2}}
* {{cite journal | vauthors = Tang P, Park DJ, Marshall Graves JA, Harley VR | title = ATRX and sex differentiation | journal = Trends in Endocrinology and Metabolism | volume = 15 | issue = 7 | pages = 339–44 | date = September 2004 | pmid = 15350606 | doi = 10.1016/j.tem.2004.07.006 }}
{{PBB_Further_reading
* {{cite journal | vauthors = Forget BG | title = De novo and acquired forms of alpha thalassemia | journal = Current Hematology Reports | volume = 5 | issue = 1 | pages = 11–4 | date = March 2006 | pmid = 16537041 | doi =  }}
| citations =
* {{cite journal | vauthors = Adès LC, Kerr B, Turner G, Wise G | title = Smith-Fineman-Myers syndrome in two brothers | journal = American Journal of Medical Genetics | volume = 40 | issue = 4 | pages = 467–70 | date = September 1991 | pmid = 1684092 | doi = 10.1002/ajmg.1320400419 }}
*{{cite journal | author=Mulley JC, Kerr B, Stevenson R, Lubs H |title=Nomenclature guidelines for X-linked mental retardation. |journal=Am. J. Med. Genet. |volume=43 |issue= 1-2 |pages= 383-91 |year= 1992 |pmid= 1605216 |doi= }}
* {{cite journal | vauthors = Sutherland GR, Gedeon AK, Haan EA, Woodroffe P, Mulley JC | title = Linkage studies with the gene for an X-linked syndrome of mental retardation, microcephaly and spastic diplegia (MRX2) | journal = American Journal of Medical Genetics | volume = 30 | issue = 1-2 | pages = 493–508 | year = 1988 | pmid = 3177467 | doi = 10.1002/ajmg.1320300152 }}
*{{cite journal | author=Tang P, Park DJ, Marshall Graves JA, Harley VR |title=ATRX and sex differentiation. |journal=Trends Endocrinol. Metab. |volume=15 |issue= 7 |pages= 339-44 |year= 2005 |pmid= 15350606 |doi= 10.1016/j.tem.2004.07.006 }}
* {{cite journal | vauthors = Shapiro MB, Senapathy P | title = RNA splice junctions of different classes of eukaryotes: sequence statistics and functional implications in gene expression | journal = Nucleic Acids Research | volume = 15 | issue = 17 | pages = 7155–74 | date = September 1987 | pmid = 3658675 | pmc = 306199 | doi = 10.1093/nar/15.17.7155 }}
*{{cite journal | author=Forget BG |title=De novo and acquired forms of alpha thalassemia. |journal=Curr. Hematol. Rep. |volume=5 |issue= 1 |pages= 11-4 |year= 2006 |pmid= 16537041 |doi=  }}
* {{cite journal | vauthors = Gibbons RJ, Picketts DJ, Villard L, Higgs DR | title = Mutations in a putative global transcriptional regulator cause X-linked mental retardation with alpha-thalassemia (ATR-X syndrome) | journal = Cell | volume = 80 | issue = 6 | pages = 837–45 | date = March 1995 | pmid = 7697714 | doi = 10.1016/0092-8674(95)90287-2 }}
*{{cite journal | author=Gibbons RJ, Suthers GK, Wilkie AO, ''et al.'' |title=X-linked alpha-thalassemia/mental retardation (ATR-X) syndrome: localization to Xq12-q21.31 by X inactivation and linkage analysis. |journal=Am. J. Hum. Genet. |volume=51 |issue= 5 |pages= 1136-49 |year= 1992 |pmid= 1415255 |doi=  }}
* {{cite journal | vauthors = Wang LH, Collins A, Lawrence S, Keats BJ, Morton NE | title = Integration of gene maps: chromosome X | journal = Genomics | volume = 22 | issue = 3 | pages = 590–604 | date = August 1994 | pmid = 8001970 | doi = 10.1006/geno.1994.1432 }}
*{{cite journal  | author=Adès LC, Kerr B, Turner G, Wise G |title=Smith-Fineman-Myers syndrome in two brothers. |journal=Am. J. Med. Genet. |volume=40 |issue= 4 |pages= 467-70 |year= 1992 |pmid= 1684092 |doi= 10.1002/ajmg.1320400419 }}
* {{cite journal | vauthors = Gecz J, Pollard H, Consalez G, Villard L, Stayton C, Millasseau P, Khrestchatisky M, Fontes M | title = Cloning and expression of the murine homologue of a putative human X-linked nuclear protein gene closely linked to PGK1 in Xq13.3 | journal = Human Molecular Genetics | volume = 3 | issue = 1 | pages = 39–44 | date = January 1994 | pmid = 8162050 | doi = 10.1093/hmg/3.1.39 }}
*{{cite journal | author=Sutherland GR, Gedeon AK, Haan EA, ''et al.'' |title=Linkage studies with the gene for an X-linked syndrome of mental retardation, microcephaly and spastic diplegia (MRX2) |journal=Am. J. Med. Genet. |volume=30 |issue= 1-2 |pages= 493-508 |year= 1988 |pmid= 3177467 |doi= }}
* {{cite journal | vauthors = Villard L, Gecz J, Mattéi JF, Fontés M, Saugier-Veber P, Munnich A, Lyonnet S | title = XNP mutation in a large family with Juberg-Marsidi syndrome | journal = Nature Genetics | volume = 12 | issue = 4 | pages = 359–60 | date = April 1996 | pmid = 8630485 | doi = 10.1038/ng0496-359 }}
*{{cite journal | author=Shapiro MB, Senapathy P |title=RNA splice junctions of different classes of eukaryotes: sequence statistics and functional implications in gene expression. |journal=Nucleic Acids Res. |volume=15 |issue= 17 |pages= 7155-74 |year= 1987 |pmid= 3658675 |doi= }}
* {{cite journal | vauthors = Bonaldo MF, Lennon G, Soares MB | title = Normalization and subtraction: two approaches to facilitate gene discovery | journal = Genome Research | volume = 6 | issue = 9 | pages = 791–806 | date = September 1996 | pmid = 8889548 | doi = 10.1101/gr.6.9.791 }}
*{{cite journal | author=Gibbons RJ, Picketts DJ, Villard L, Higgs DR |title=Mutations in a putative global transcriptional regulator cause X-linked mental retardation with alpha-thalassemia (ATR-X syndrome). |journal=Cell |volume=80 |issue= 6 |pages= 837-45 |year= 1995 |pmid= 7697714 |doi= }}
* {{cite journal | vauthors = Picketts DJ, Higgs DR, Bachoo S, Blake DJ, Quarrell OW, Gibbons RJ | title = ATRX encodes a novel member of the SNF2 family of proteins: mutations point to a common mechanism underlying the ATR-X syndrome | journal = Human Molecular Genetics | volume = 5 | issue = 12 | pages = 1899–907 | date = December 1996 | pmid = 8968741 | doi = 10.1093/hmg/5.12.1899 }}
*{{cite journal  | author=Stayton CL, Dabovic B, Gulisano M, ''et al.'' |title=Cloning and characterization of a new human Xq13 gene, encoding a putative helicase. |journal=Hum. Mol. Genet. |volume=3 |issue= 11 |pages= 1957-64 |year= 1995 |pmid= 7874112 |doi=  }}
* {{cite journal | vauthors = Villard L, Lacombe D, Fontés M | title = A point mutation in the XNP gene, associated with an ATR-X phenotype without alpha-thalassemia | journal = European Journal of Human Genetics | volume = 4 | issue = 6 | pages = 316–20 | year = 1997 | pmid = 9043863 | doi =  }}
*{{cite journal | author=Wang LH, Collins A, Lawrence S, ''et al.'' |title=Integration of gene maps: chromosome X. |journal=Genomics |volume=22 |issue= 3 |pages= 590-604 |year= 1995 |pmid= 8001970 |doi= 10.1006/geno.1994.1432 }}
* {{cite journal | vauthors = Villard L, Lossi AM, Cardoso C, Proud V, Chiaroni P, Colleaux L, Schwartz C, Fontés M | title = Determination of the genomic structure of the XNP/ATRX gene encoding a potential zinc finger helicase | journal = Genomics | volume = 43 | issue = 2 | pages = 149–55 | date = July 1997 | pmid = 9244431 | doi = 10.1006/geno.1997.4793 }}
*{{cite journal | author=Gecz J, Pollard H, Consalez G, ''et al.'' |title=Cloning and expression of the murine homologue of a putative human X-linked nuclear protein gene closely linked to PGK1 in Xq13.3. |journal=Hum. Mol. Genet. |volume=3 |issue= 1 |pages= 39-44 |year= 1994 |pmid= 8162050 |doi= }}
* {{cite journal | vauthors = Golub EI, Kovalenko OV, Gupta RC, Ward DC, Radding CM | title = Interaction of human recombination proteins Rad51 and Rad54 | journal = Nucleic Acids Research | volume = 25 | issue = 20 | pages = 4106–10 | date = October 1997 | pmid = 9321665 | pmc = 147015 | doi = 10.1093/nar/25.20.4106 }}
*{{cite journal | author=Villard L, Gecz J, Mattéi JF, ''et al.'' |title=XNP mutation in a large family with Juberg-Marsidi syndrome. |journal=Nat. Genet. |volume=12 |issue= 4 |pages= 359-60 |year= 1996 |pmid= 8630485 |doi= 10.1038/ng0496-359 }}
* {{cite journal | vauthors = Gibbons RJ, Bachoo S, Picketts DJ, Aftimos S, Asenbauer B, Bergoffen J, Berry SA, Dahl N, Fryer A, Keppler K, Kurosawa K, Levin ML, Masuno M, Neri G, Pierpont ME, Slaney SF, Higgs DR | title = Mutations in transcriptional regulator ATRX establish the functional significance of a PHD-like domain | journal = Nature Genetics | volume = 17 | issue = 2 | pages = 146–8 | date = October 1997 | pmid = 9326931 | doi = 10.1038/ng1097-146 }}
*{{cite journal | author=Bonaldo MF, Lennon G, Soares MB |title=Normalization and subtraction: two approaches to facilitate gene discovery. |journal=Genome Res. |volume=6 |issue= 9 |pages= 791-806 |year= 1997 |pmid= 8889548 |doi= }}
* {{cite journal | vauthors = Cardoso C, Timsit S, Villard L, Khrestchatisky M, Fontès M, Colleaux L | title = Specific interaction between the XNP/ATR-X gene product and the SET domain of the human EZH2 protein | journal = Human Molecular Genetics | volume = 7 | issue = 4 | pages = 679–84 | date = April 1998 | pmid = 9499421 | doi = 10.1093/hmg/7.4.679 }}
*{{cite journal | author=Picketts DJ, Higgs DR, Bachoo S, ''et al.'' |title=ATRX encodes a novel member of the SNF2 family of proteins: mutations point to a common mechanism underlying the ATR-X syndrome. |journal=Hum. Mol. Genet. |volume=5 |issue= 12 |pages= 1899-907 |year= 1997 |pmid= 8968741 |doi= }}
* {{cite journal | vauthors = Bérubé NG, Mangelsdorf M, Jagla M, Vanderluit J, Garrick D, Gibbons RJ, Higgs DR, Slack RS, Picketts DJ | title = The chromatin-remodeling protein ATRX is critical for neuronal survival during corticogenesis | journal = The Journal of Clinical Investigation | volume = 115 | issue = 2 | pages = 258–67 | date = February 2005 | pmid = 15668733 | pmc = 544602 | doi = 10.1172/JCI22329 }}
*{{cite journal | author=Villard L, Lacombe D, Fontés M |title=A point mutation in the XNP gene, associated with an ATR-X phenotype without alpha-thalassemia. |journal=Eur. J. Hum. Genet. |volume=4 |issue= 6 |pages= 316-20 |year= 1997 |pmid= 9043863 |doi=  }}
*{{cite journal | author=Villard L, Lossi AM, Cardoso C, ''et al.'' |title=Determination of the genomic structure of the XNP/ATRX gene encoding a potential zinc finger helicase. |journal=Genomics |volume=43 |issue= 2 |pages= 149-55 |year= 1997 |pmid= 9244431 |doi= 10.1006/geno.1997.4793 }}
*{{cite journal | author=Golub EI, Kovalenko OV, Gupta RC, ''et al.'' |title=Interaction of human recombination proteins Rad51 and Rad54. |journal=Nucleic Acids Res. |volume=25 |issue= 20 |pages= 4106-10 |year= 1997 |pmid= 9321665 |doi= }}
*{{cite journal | author=Gibbons RJ, Bachoo S, Picketts DJ, ''et al.'' |title=Mutations in transcriptional regulator ATRX establish the functional significance of a PHD-like domain. |journal=Nat. Genet. |volume=17 |issue= 2 |pages= 146-8 |year= 1997 |pmid= 9326931 |doi= 10.1038/ng1097-146 }}
*{{cite journal | author=Cardoso C, Timsit S, Villard L, ''et al.'' |title=Specific interaction between the XNP/ATR-X gene product and the SET domain of the human EZH2 protein. |journal=Hum. Mol. Genet. |volume=7 |issue= 4 |pages= 679-84 |year= 1998 |pmid= 9499421 |doi= }}
}}
{{refend}}
{{refend}}


{{protein-stub}}
== External links ==
{{WikiDoc Sources}}
* [https://www.ncbi.nlm.nih.gov/books/NBK1449/  GeneReviews/NCBI/NIH/UW entry on Alpha-Thalassemia X-Linked Mental Retardation Syndrome; ATRX Syndrome; Alpha Thalassemia/Mental Retardation, X-Linked; XLMR-Hypotonic Face Syndrome]
* [https://www.ncbi.nlm.nih.gov/omim/300032,301040,300032,301040  OMIM entries on Alpha-Thalassemia X-Linked Mental Retardation Syndrome]
* {{UCSC gene info|ATRX}}
* {{UCSC gene info|RAD54L}}

Revision as of 18:29, 29 August 2017

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Identifiers
Aliases
External IDsGeneCards: [1]
Orthologs
SpeciesHumanMouse
Entrez

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Ensembl

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UniProt

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RefSeq (mRNA)

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RefSeq (protein)

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View/Edit Human

Transcriptional regulator ATRX also known as ATP-dependent helicase ATRX, X-linked helicase II, or X-linked nuclear protein (XNP) is a protein that in humans is encoded by the ATRX gene.[1][2][3]

Function

Transcriptional regulator ATRX contains an ATPase / helicase domain, and thus it belongs to the SWI/SNF family of chromatin remodeling proteins. ATRX is required for deposition of the histone variant H3.3 at telomeres and other genomic repeats.[4] These interactions are important for maintaining silencing at these sites.[5][6][7]

In addition, ATRX undergoes cell cycle-dependent phosphorylation, which regulates its nuclear matrix and chromatin association, and suggests its involvement in the gene regulation at interphase and chromosomal segregation in mitosis.[3]

Clinical significance

Inherited mutations

Inherited mutations of the ATRX gene are associated with an X-linked mental retardation (XLMR) syndrome most often accompanied by alpha-thalassemia (ATR-X) syndrome. These mutations have been shown to cause diverse changes in the pattern of DNA methylation, which may provide a link between chromatin remodeling, DNA methylation, and gene expression in developmental processes. Multiple alternatively spliced transcript variants encoding distinct isoforms have been reported. Female carriers may demonstrate skewed X chromosome inactivation.[3]

Somatic mutations

Acquired mutations in ATRX have been reported in a number of human cancers including pancreatic neuroendocrine tumours,[8] gliomas,[9] astrocytomas,[10] osteosarcomas,[11] and malignant pheochromocytomas.[12] There is a strong correlation between ATRX mutations and an Alternative Lengthening of Telomeres (ALT) phenotype in cancers.[8]

Interactions

ATRX forms a complex with DAXX which is an histone H3.3 chaperone.[13]

ATRX has been also shown to interact with EZH2.[14]

See also

References

  1. ↑ Stayton CL, Dabovic B, Gulisano M, Gecz J, Broccoli V, Giovanazzi S, et al. (November 1994). "Cloning and characterization of a new human Xq13 gene, encoding a putative helicase". Human Molecular Genetics. 3 (11): 1957–64. doi:10.1093/hmg/3.11.1957. PMID 7874112.
  2. ↑ Gibbons RJ, Suthers GK, Wilkie AO, Buckle VJ, Higgs DR (November 1992). "X-linked alpha-thalassemia/mental retardation (ATR-X) syndrome: localization to Xq12-q21.31 by X inactivation and linkage analysis". American Journal of Human Genetics. 51 (5): 1136–49. PMC 1682840. PMID 1415255.
  3. ↑ 3.0 3.1 3.2 "Entrez Gene: ATRX alpha thalassemia/mental retardation syndrome X-linked (RAD54 homolog, S. cerevisiae)".
  4. ↑ Wong LH, McGhie JD, Sim M, Anderson MA, Ahn S, Hannan RD, et al. (March 2010). "ATRX interacts with H3.3 in maintaining telomere structural integrity in pluripotent embryonic stem cells". Genome Research. 20 (3): 351–60. doi:10.1101/gr.101477.109. PMC 2840985. PMID 20110566.
  5. ↑ Voon HP, Hughes JR, Rode C, De La Rosa-Velázquez IA, Jenuwein T, Feil R, et al. (April 2015). "ATRX Plays a Key Role in Maintaining Silencing at Interstitial Heterochromatic Loci and Imprinted Genes". Cell Reports. 11 (3): 405–18. doi:10.1016/j.celrep.2015.03.036. PMC 4410944. PMID 25865896.
  6. ↑ Elsässer SJ, Noh KM, Diaz N, Allis CD, Banaszynski LA (June 2015). "Histone H3.3 is required for endogenous retroviral element silencing in embryonic stem cells". Nature. 522 (7555): 240–4. doi:10.1038/nature14345. PMC 4509593. PMID 25938714.
  7. ↑ Udugama M, M Chang FT, Chan FL, Tang MC, Pickett HA, R McGhie JD, et al. (December 2015). "Histone variant H3.3 provides the heterochromatic H3 lysine 9 tri-methylation mark at telomeres". Nucleic Acids Research. 43 (21): 10227–37. doi:10.1093/nar/gkv847. PMC 4666390. PMID 26304540.
  8. ↑ 8.0 8.1 Heaphy CM, de Wilde RF, Jiao Y, Klein AP, Edil BH, Shi C, et al. (July 2011). "Altered telomeres in tumors with ATRX and DAXX mutations". Science. 333 (6041): 425. doi:10.1126/science.1207313. PMC 3174141. PMID 21719641.
  9. ↑ Schwartzentruber J, Korshunov A, Liu XY, Jones DT, Pfaff E, Jacob K, et al. (January 2012). "Driver mutations in histone H3.3 and chromatin remodelling genes in paediatric glioblastoma". Nature. 482 (7384): 226–31. doi:10.1038/nature10833. PMID 22286061.
  10. ↑ Kannan K, Inagaki A, Silber J, Gorovets D, Zhang J, Kastenhuber ER, et al. (October 2012). "Whole-exome sequencing identifies ATRX mutation as a key molecular determinant in lower-grade glioma". Oncotarget. 3 (10): 1194–203. doi:10.18632/oncotarget.689. PMC 3717947. PMID 23104868.
  11. ↑ Chen X, Bahrami A, Pappo A, Easton J, Dalton J, Hedlund E, et al. (April 2014). "Recurrent somatic structural variations contribute to tumorigenesis in pediatric osteosarcoma". Cell Reports. 7 (1): 104–12. doi:10.1016/j.celrep.2014.03.003. PMC 4096827. PMID 24703847.
  12. ↑ Comino-Méndez, I (June 2016). "ATRX driver mutation in a composite malignant pheochromocytoma". Cancer Genetics. 209 (6): 272. doi:10.1016/j.cancergen.2016.04.058.
  13. ↑ Lewis PW, Elsaesser SJ, Noh KM, Stadler SC, Allis CD (August 2010). "Daxx is an H3.3-specific histone chaperone and cooperates with ATRX in replication-independent chromatin assembly at telomeres". Proceedings of the National Academy of Sciences of the United States of America. 107 (32): 14075–80. doi:10.1073/pnas.1008850107. PMC 2922592. PMID 20651253.
  14. ↑ Cardoso C, Timsit S, Villard L, Khrestchatisky M, Fontès M, Colleaux L (April 1998). "Specific interaction between the XNP/ATR-X gene product and the SET domain of the human EZH2 protein". Human Molecular Genetics. 7 (4): 679–84. doi:10.1093/hmg/7.4.679. PMID 9499421.

Further reading

  • Mulley JC, Kerr B, Stevenson R, Lubs H (1992). "Nomenclature guidelines for X-linked mental retardation". American Journal of Medical Genetics. 43 (1–2): 383–91. doi:10.1002/ajmg.1320430159. PMID 1605216.
  • Tang P, Park DJ, Marshall Graves JA, Harley VR (September 2004). "ATRX and sex differentiation". Trends in Endocrinology and Metabolism. 15 (7): 339–44. doi:10.1016/j.tem.2004.07.006. PMID 15350606.
  • Forget BG (March 2006). "De novo and acquired forms of alpha thalassemia". Current Hematology Reports. 5 (1): 11–4. PMID 16537041.
  • Adès LC, Kerr B, Turner G, Wise G (September 1991). "Smith-Fineman-Myers syndrome in two brothers". American Journal of Medical Genetics. 40 (4): 467–70. doi:10.1002/ajmg.1320400419. PMID 1684092.
  • Sutherland GR, Gedeon AK, Haan EA, Woodroffe P, Mulley JC (1988). "Linkage studies with the gene for an X-linked syndrome of mental retardation, microcephaly and spastic diplegia (MRX2)". American Journal of Medical Genetics. 30 (1–2): 493–508. doi:10.1002/ajmg.1320300152. PMID 3177467.
  • Shapiro MB, Senapathy P (September 1987). "RNA splice junctions of different classes of eukaryotes: sequence statistics and functional implications in gene expression". Nucleic Acids Research. 15 (17): 7155–74. doi:10.1093/nar/15.17.7155. PMC 306199. PMID 3658675.
  • Gibbons RJ, Picketts DJ, Villard L, Higgs DR (March 1995). "Mutations in a putative global transcriptional regulator cause X-linked mental retardation with alpha-thalassemia (ATR-X syndrome)". Cell. 80 (6): 837–45. doi:10.1016/0092-8674(95)90287-2. PMID 7697714.
  • Wang LH, Collins A, Lawrence S, Keats BJ, Morton NE (August 1994). "Integration of gene maps: chromosome X". Genomics. 22 (3): 590–604. doi:10.1006/geno.1994.1432. PMID 8001970.
  • Gecz J, Pollard H, Consalez G, Villard L, Stayton C, Millasseau P, Khrestchatisky M, Fontes M (January 1994). "Cloning and expression of the murine homologue of a putative human X-linked nuclear protein gene closely linked to PGK1 in Xq13.3". Human Molecular Genetics. 3 (1): 39–44. doi:10.1093/hmg/3.1.39. PMID 8162050.
  • Villard L, Gecz J, Mattéi JF, Fontés M, Saugier-Veber P, Munnich A, Lyonnet S (April 1996). "XNP mutation in a large family with Juberg-Marsidi syndrome". Nature Genetics. 12 (4): 359–60. doi:10.1038/ng0496-359. PMID 8630485.
  • Bonaldo MF, Lennon G, Soares MB (September 1996). "Normalization and subtraction: two approaches to facilitate gene discovery". Genome Research. 6 (9): 791–806. doi:10.1101/gr.6.9.791. PMID 8889548.
  • Picketts DJ, Higgs DR, Bachoo S, Blake DJ, Quarrell OW, Gibbons RJ (December 1996). "ATRX encodes a novel member of the SNF2 family of proteins: mutations point to a common mechanism underlying the ATR-X syndrome". Human Molecular Genetics. 5 (12): 1899–907. doi:10.1093/hmg/5.12.1899. PMID 8968741.
  • Villard L, Lacombe D, Fontés M (1997). "A point mutation in the XNP gene, associated with an ATR-X phenotype without alpha-thalassemia". European Journal of Human Genetics. 4 (6): 316–20. PMID 9043863.
  • Villard L, Lossi AM, Cardoso C, Proud V, Chiaroni P, Colleaux L, Schwartz C, Fontés M (July 1997). "Determination of the genomic structure of the XNP/ATRX gene encoding a potential zinc finger helicase". Genomics. 43 (2): 149–55. doi:10.1006/geno.1997.4793. PMID 9244431.
  • Golub EI, Kovalenko OV, Gupta RC, Ward DC, Radding CM (October 1997). "Interaction of human recombination proteins Rad51 and Rad54". Nucleic Acids Research. 25 (20): 4106–10. doi:10.1093/nar/25.20.4106. PMC 147015. PMID 9321665.
  • Gibbons RJ, Bachoo S, Picketts DJ, Aftimos S, Asenbauer B, Bergoffen J, Berry SA, Dahl N, Fryer A, Keppler K, Kurosawa K, Levin ML, Masuno M, Neri G, Pierpont ME, Slaney SF, Higgs DR (October 1997). "Mutations in transcriptional regulator ATRX establish the functional significance of a PHD-like domain". Nature Genetics. 17 (2): 146–8. doi:10.1038/ng1097-146. PMID 9326931.
  • Cardoso C, Timsit S, Villard L, Khrestchatisky M, Fontès M, Colleaux L (April 1998). "Specific interaction between the XNP/ATR-X gene product and the SET domain of the human EZH2 protein". Human Molecular Genetics. 7 (4): 679–84. doi:10.1093/hmg/7.4.679. PMID 9499421.
  • Bérubé NG, Mangelsdorf M, Jagla M, Vanderluit J, Garrick D, Gibbons RJ, Higgs DR, Slack RS, Picketts DJ (February 2005). "The chromatin-remodeling protein ATRX is critical for neuronal survival during corticogenesis". The Journal of Clinical Investigation. 115 (2): 258–67. doi:10.1172/JCI22329. PMC 544602. PMID 15668733.

External links

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